A New Strategy for Online Secondary-Path Modeling of Narrowband Active Noise Control
A New Strategy for Online Secondary-Path Modeling of Narrowband Active Noise Control
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DOI：
10.1109/taslp.2016.2633799
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发表时间：
2017-02
期刊：
影响因子：
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通讯作者：
Yaping Ma;Yegui Xiao
中科院分区：
文献类型：
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作者：
Yaping Ma;Yegui Xiao
基于随机辅助噪声的在线次级通道建模（SPM）是一种非常有前途和吸引力的有源噪声控制（ANC）技术。本文提出了一种新的窄带ANC（NANC）在线SPM策略。由IIR陷波滤波器组成的带通滤波器组应用于残余噪声，以将未消除的正弦噪声与由于注入的辅助噪声和加性噪声而引起的其它宽带噪声分离。提取的正弦噪声被同时用于缩放辅助噪声，以清洁SPM子系统的所需信号，并更新控制器。这一战略的好处是双重的。它可以有效地减少注入的辅助噪声对剩余噪声功率的贡献。同时，它还可以大大提高整个系统的收敛速度以及在线SPM的精度。还提供了初步分析，以支持拟议的战略。大量的模拟与合成/真实的次要路径和噪声进行证明所提出的SPM策略的优越性，比传统的技术。
Online secondary-path modeling (SPM) based on the use of random auxiliary noise is a very promising and attractive technique for implementing active noise control (ANC). In this paper, a new strategy is proposed for the online SPM of narrowband ANC (NANC). A bandpass filter bank consisting of IIR notch filters is applied to the residual noise to separate the uncancelled sinusoidal noise from other broadband noises due to the injected auxiliary noise and an additive noise. The extracted sinusoidal noise is used simultaneously to scale the auxiliary noise, to clean the desired signal for the SPM subsystem, and to update the controller. The benefits of this strategy are twofold. It can effectively reduce the contribution of injected auxiliary noise to the residual noise power. Meanwhile, it can also considerably raise the convergence rate of overall system as well as the accuracy of online SPM. Preliminary analysis is also provided to support the proposed strategy. Extensive simulations with synthetic/real secondary paths and noises are performed to demonstrate the superiority of the proposed SPM strategy over the conventional techniques.